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| Certification Vendor: | Linux Foundation / Cloud Native Computing Foundation (CNCF) |
|---|---|
| Exam Name: | Certified Kubernetes Administrator (CKA) Program Exam |
| Exam Number: | CKA |
| Exam Price: | $445 USD |
| Available Languages: | Simplified Chinese, Japanese, English |
| Real Exam Qty: | 15-20 performance-based tasks |
| Exam Duration: | 120 minutes |
| Passing Score: | 66% |
| Certificate Validity Period: | 2 years |
| Related Certifications: | Certified Kubernetes Security Specialist (CKS) Certified Kubernetes Application Developer (CKAD) |
| Exam Format: | Hands-on in real Kubernetes environment, Online proctored, Command-line tasks, Performance-based |
| Recommended Training: | Introduction to Kubernetes (Free Course) LFS258: Kubernetes Fundamentals |
| Exam Registration: | Linux Foundation Training Portal |
| Sample Questions: | Linux Foundation CKA Sample Questions |
| Exam Way: | Online, remotely proctored via PSI; browser-based terminal environment |
| Pre Condition: | No formal prerequisites; basic Linux and Kubernetes knowledge recommended |
| Official Syllabus URL: | https://training.linuxfoundation.org/certification/certified-kubernetes-administrator-cka/ |
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The CKA program is ideal for IT professionals who are involved in building, deploying, and managing containerized applications on Kubernetes. CKA exam tests a candidate's skills in areas such as cluster installation and configuration, application deployment and lifecycle management, monitoring and troubleshooting, and security. Successful completion of the exam demonstrates to employers that a candidate has the skills and knowledge necessary to manage Kubernetes clusters in production environments.
NEW QUESTION # 26
List all the pods that are serviced by the service "webservice" and copy the output in /opt/$USER/webservice.targets Note: You need to list the endpoints
Answer:
Explanation:
kubectl descrive svc webservice | grep -i "Endpoints" > /opt/$USER/webservice.targets kubectl get endpoints webservice > /opt/$USER/webservice.targets
NEW QUESTION # 27
Create a pod that echo "hello world" and then exists. Have the pod deleted automatically when it's completed See the solution below.
Answer:
Explanation:
kubectl run busybox --image=busybox -it --rm --restart=Never --
/bin/sh -c 'echo hello world'
kubectl get po # You shouldn't see pod with the name "busybox"
NEW QUESTION # 28
Create a deployment as follows:
Name: nginx-random
Exposed via a service nginx-random
Ensure that the service & pod are accessible via their respective DNS records The container(s) within any pod(s) running as a part of this deployment should use the nginx Image Next, use the utility nslookup to look up the DNS records of the service & pod and write the output to /opt/KUNW00601/service.dns and /opt/KUNW00601/pod.dns respectively.
Answer:
Explanation:
Solution:
NEW QUESTION # 29
You have a Kubernetes cluster with multiple namespaces. You need to create a shared network policy that allows pods in a specific namespace ('dev') to communicate with pods in another namespace ('prod'), but only for specific ports. How would you configure this shared network policy?
Answer:
Explanation:
See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
1. Create a Network Policy in the 'prod' Namespace:
- Define a Network Policy in the 'prod' namespace that allows ingress traffic from pods in the 'dev' namespace.
- Example:
- This Network Policy will allow TCP traffic from pods in the 'dev' namespace to the 'prod' namespace on ports 8080 and 5432. 2. Apply the Network Policy: - Apply the Network Policy using 'kubectl apply -f network-policy.yaml'. 3. Verify the Policy: - You can use 'kubectl get networkpolicies -n prod' to verify that the Network Policy is created successfully. - Test communication between pods in the 'dev' and prod' namespaces using the specified ports. 4. Additional Considerations: - You can adjust the 'podSelector' and 'namespaceSelector' fields to target specific pods or namespaces. - You can use the 'ingress' and 'egress' fields to configure both ingress and egress traffic rules. - Ensure that your application's deployments have the necessary labels for the Network Policy to apply correctly. ,
NEW QUESTION # 30
You are running a Kubernetes cluster with a large number of deployments and services. You need to improve the performance and efficiency of DNS resolution, especially during peak traffic periods.
Answer:
Explanation:
See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
1. Increase CoreDNS Resources:
- Allocate more CPU, memory, and storage resources to the CoreDNS Deployment to handle increased DNS traffic.
2. Configure CoreDNS for Efficient Caching: - Use CoreDNS's 'cache' plugin to store DNS records in memory and reduce the need for frequent DNS queries.
3. Use a Distributed DNS Server: - If you have a very large cluster with high traffic, consider using a distributed DNS server like etcd or Consul. This can help to improve performance and scalability. 4. Use DNS over TLS (DOT) or DNS over HTTPS (DoH): - Enable secure DNS communication to reduce the risk of DNS poisoning attacks, which can significantly impact performance.
5. Monitor CoreDNS Performance: - Use metrics and logs to monitor CoreDNS performance and identify potential bottlenecks. This will help you adjust your configuration and resource allocation as needed. ]
NEW QUESTION # 31
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Valid CKA Test Syllabus: https://www.real4prep.com/CKA-exam.html
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